Comparison

SleepMapper vs Rem

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SleepMapper

This app enhances sleep quality by connecting with smart headbands and wake-up lights. It tracks sleep stages, provides soothing audio, and offers smart alarms to improve daytime energy and promote a refreshed awakening.

Highlights
  • Deep sleep enhancement with audio tones
  • Sleep stage tracking
  • Smart alarm for gentle waking
  • Bedroom environment monitoring
  • Guided wind-down feature
  • HealthKit integration
Features
Read full description

The SleepMapper app pairs with the SmartSleep Deep Sleep Headband and the connected Sleep & Wake-Up Light devices. Download the SleepMapper app to awaken to a better day tomorrow. Enhancing deep sleep With SmartSleep Deep Sleep Headband: Improves your total sleep experience - falling asleep, sleep quality and waking up. Measures your sleep stages and delivers audio tones to boost quality of deep sleep, increasing daytime energy. Soothes you to sleep with gentle sounds only you can hear. Smart Alarm wakes you with gentle sounds during periods of light sleep. SmartSleep Deep Sleep Headband is a wearable sleep solution, proven to help improve the quality of your sleep for those who do not get enough sleep due to lifestyle. Sound tones enhance the “slow waves” your brain produces during deep sleep. Feel more rested and refreshed without changing how long you sleep. Waking up refreshed With SmartSleep Sleep & Wake-Up Light: Fall asleep relaxed, wake up refreshed and learn about your bedroom environment. Monitor amongst other the light and sound levels so you can adjust to improve your sleep. Philips SmartSleep Sleep & Wake-Up Light is our premier Sleep & Wake-up Light and is designed to help you wake up refreshed after a productive night’s sleep. It combines the benefits of a Wake-up Light with RelaxBreathe, a guided wind-down-to-sleep feature that helps calm your body and mind – and offers extensive app-enabled customization for personalizing your sleeping environment. Philips SmartSleep Sleep & Wake-Up Light is part of our full range of light therapy products created to get you into a positive sleeping, waking and living routine. You’re part of our first release of our sleep platform and we’d love your help to continuously improve. We welcome any feedback on how you’re finding the app, additional features, and improvement. Thank you for supporting and joining our healthy sleep community. Please note SleepMapper supports Philips SmartSleep Deep Sleep Headband and the connected Sleep & Wake-Up Light devices. For CPAP devices, please download the DreamMapper app. For more info visit Philips.com/SmartSleep This app is compatible with HealthKit for sleep tracking purposes.

About

Rem

This app automatically tracks your sleep cycles using your Apple Watch, providing detailed analysis of your sleep patterns. It offers insights into sleep quality, disruptions, and heart rate, helping you understand and improve your rest.

Highlights
  • Automatic sleep tracking
  • Sleep pattern analysis
  • Snore detection
  • Sleep score and breakdown
  • Heart rate analysis
  • Smart alarm clock
Features
Read full description

Unlock the secrets of a good night's sleep with Rem, the smart autosleep tracker. With its advanced AI-Machine Learning technology, Rem provides an in-depth analysis of your sleep patterns and helps you understand the impact of your habits and routines on your sleep quality. Get ready to say goodbye to restless nights and hello to sweet dreams with Rem. = Key Features = — Completely Automatic and Easy to use — Sleep Pattern Diagram (Rem stage included) — Snore Detection — Sleep Score — Score Breakdown — Heart Rate Analysis (Dip and Detail Diagram) — Sleep Regularity — Time to Sleep — Trends — Nap Detection — Sleep History — Sleep Assessment — Smart Alarm Clock — Low Battery Usage — Compatible with All Available Apple Watch Versions ============= HOW REM WORKS: • All you need to do is wear your Apple Watch to bed. • An iwatch sleep tracker, facilitates the AI-Machine Learning algorithm to analyze sleep cycle. • Moving more or less than others, Rem adjusts automatically to your personal data • We ignore sleep sessions that are less than 1 hour. To enable snore detection: 1. Connect your iPhone to a power source 2. Tap the "Start Tracking" button 3. Optionally, set a gentle alarm to wake you up. — EASY TO USE — Just wear your Apple watch before bedtime and check your sleep log after you wake up. Your shut eye report is displayed in a clear and understandable way. — SLEEP PATTERN DIAGRAM — Understand your sleep cycles with simple graphs. Discover how to get the restful and restorative sleep you deserve! You can find out the exact times you’ve been disrupted, as well as easily learn the total amount of deep, light, and REM phases. — SNORE Detection — You can identify if snoring is affecting your sleep quality and take necessary actions to improve it. Rem is also equipped with environment sound detection, so you can monitor the ambient noise levels and make adjustments for a more comfortable sleeping environment. — SLEEP SCORE — Your Sleep Score is displayed clearly with a number 0-100 which is an accurate interpretation of your rest quality. — SCORE BREAKDOWN — REM App highlights the most relevant data of your sleep: • Time Asleep • Sleep Details » The total minutes of your deep and REM phases, the most restorative phase of your sleep • Heart Rate » Your heart rate analysis is key for measuring your shut eye quality. You can view your sleeping heart rate graph, your average sleeping heart rate, and the dip percentage of your heart rate during sleep • Disruption • Regularity » REM app records your sleep rhythm automatically and will demonstrate your sleep consistency in a user-friendly diagram. • Time To Sleep • Respiratory Rate » The number of times you breathe in a minute during sleep • Blood Oxygen » The level of blood oxygen during sleep — TRENDS — Follow the impact of your routines on your sleep quality with help of trend diagrams. — SLEEP HISTORY — Monitor your previous sleep diagrams and compare them to your latest data. — NAP DETECTION — REM is an auto nap tracker and will show the nap sessions in a separate field. — SLEEP ASSESSMENT — Learn more about healthy sleep practices by taking the assessment and set yourself up for better sleep. — SMART ALARM — Wake up refreshed and ready for the day. Our smart alarm clock gently eases you out of deep sleep. To use this feature, watchOS 6 or higher is required. — LOW BATTERY USAGE — Don’t worry about draining your battery because it’s low battery usage, even less than your usual usage of Watch. Charge your watch during the day or before sleep. Make sure it has at least a %30 charge. Rem is for anybody who struggles with insomnia or sleep apnea. With the power of its sleep tracking algorithm, you can find accurate and valuable insight about your sleep. Set the smart alarm before bed time and rise refreshed and on-time. It’s a simple-to-use sleep recorder, no need to put it under your pillow. Terms and Privacy Policy: https://bettersleeapapp.com/rem/terms.html

Screenshots

SleepMapper4 screens
Rem4 screens

Verdict

The call

The clearest difference is rating: SleepMapper at 4.7 against Rem's 4.2. SleepMapper also leads on in-app purchases (none vs 8). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Rem sells 8 in-app purchases, starting at $4.99 per month. SleepMapper asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SleepMapper holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 3.8K and 2.7K respectively. Written reviews complicate that: 30% of SleepMapper's written reviews are positive against 38% of Rem's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

SleepMapper ships an update every 2 months, Rem every 6 weeks. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
SleepMapper versus Rem: the parameters behind the verdict, then further details
ParameterSleepMapperRem
PriceFreeFree
Rating4.7 (3.8K ratings) — better4.2 (2.7K ratings)
Positive reviews30.2% of reviews37.7% of reviews — better
Number of ratings3.8K — better2.7K
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.616.0 — better
Further details — not scored
Size193 MB102 MB
Age rating4+12+
DeveloperPhilipsWELLBEINE TECHNOLOGIES INC

Customer experience

SleepMapper

All ratings3,789 ratings
Positive92.8%
Neutral2.5%
Negative4.7%
Written reviews242 reviews
Positive30.2%
Neutral12.4%
Negative57.4%

Rem

All ratings2,725 ratings
Positive78.2%
Neutral6.2%
Negative15.6%
Written reviews334 reviews
Positive37.7%
Neutral12.3%
Negative50.0%

User reviews

SleepMapper

From 3.8K App Store ratings

What we love

  • 🚀 Excellent wake-up light
  • 🌙 Helps with sleep
  • 👍 Customizable settings
  • 🌞 Simulates sunrise/sunset

Room to improve

  • 🐛 Connectivity issues with app
  • 🔌 Unreliable WiFi connection
  • 📱 App is buggy and unstable
  • 🕰️ Difficult to set up and use

Rem

From 2.7K App Store ratings

What we love

  • 🚀 Accurate sleep tracking
  • 📊 Detailed sleep data
  • 🔍 Helpful for monitoring sleep issues
  • 👍 Simple and intuitive interface
  • 💤 Tracks naps

Room to improve

  • 🐛 Inconsistent data recording
  • ⏰ Inaccurate sleep/wake times
  • 💰 Expensive subscription
  • 🔇 Snoring/noise tracking not working
  • 🔄 Changing/inconsistent sleep results

Bugs and requests

SleepMapper

Reported bugs

4 issues
  • App won't connect to device
  • Alarm settings not saving
  • Frequent disconnections and need to reset
  • App crashes on launch

Requested features

4 requests
  • Integrate with smart home platforms
  • Add more sound/music options
  • Improve sleep tracking and data analysis
  • Allow remote control from anywhere

Rem

Reported bugs

3 issues
  • App crashes or freezes
  • Disconnection issues with Apple Watch
  • Lack of customer support responsiveness

Requested features

5 requests
  • Historical sleep data and trends
  • Ability to edit sleep times
  • Improved smart alarm functionality
  • Better integration with Apple Health
  • More customization options

In-app purchases

None

SleepMapper

No in-app purchases

8 purchases

Rem

Subscriptions7
  • Monthly Subscription7 Days trial$4.991 Month
  • 3 Month Subscription7 Days trial$19.493 Months
  • 6 Month Subscription7 Days trial$25.996 Months
Show 4 more
  • Yearly Subscription7 Days trial$29.991 Year
  • Yearly Subscription$29.991 Year
  • Rem Premium7 Days trial$29.991 Year
  • Yearly Subscription7 Days trial$59.991 Year
One-time1
  • Lifetime Subscription$49.99

Questions

Is SleepMapper free?
SleepMapper is free to download, with no in-app purchases.
Is Rem free?
Rem is free to download, with in-app purchases available.
Which has better reviews, SleepMapper or Rem?
SleepMapper is rated higher. SleepMapper averages 4.7 out of 5 from 3.8K ratings, while Rem averages 4.2 from 2.7K ratings.
Do SleepMapper or Rem have ads?
Neither SleepMapper nor Rem shows ads.
Which is updated more often, SleepMapper or Rem?
SleepMapper ships an update every 2 months, and Rem every 6 weeks. Most recently, SleepMapper was updated on October 18, 2026 and Rem on October 14, 2026.

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